Method for deciding the reactivity and soot index of carbon products
AssigneeNorsk Hydro a.s.
InventorsKnut Bergli, Trygve Foosnaes, Tormod Naterstad
Life of this patent
Estimating the term…
Abstract
Air reactivity, CO.sub.2 and soot index of a carbon product is determined. The air reactivity and CO.sub.2 reactivity of a sample of a carbon product are determined on the basis of the same test of the same sample. Air reactivity is analyzed first and, when such analysis is finished, CO.sub.2 reactivity is automatically analyzed on the same sample. The soot index is determined by collecting and weighing soot dust. A vertical tube furnace includes an inlet for the introduction of gas, and a sample holder which is freely suspended from a weighing device and extends down into the tube furnace. The sample holder is provided with one or more thermocouples for registering temperature of a carbon product.
Claims7
A method of determining air reactivity, CO.sub.2 reactivity and soot index of a carbon product, said method comprising:
- first conducting an air reactivity analysis on a sample of said carbon product and thereby determining said air reactivity thereof;
- after completion of said air reactivity analysis, then conducting a CO.sub.2 reactivity analysis on said air reacted sample of said carbon product and thereby determining said CO.sub.2 reactivity thereof;
- and
- after completion of said CO.sub.2 reactivity analysis, collecting and weighing soot dust from said sample resulting from said analyses and thereby determining said soot index of said carbon product.
Dependencies are inferred from the claim text.